Martyn’s Law Compliance Calculator
Assess your venue’s potential requirements under the Terrorism (Protection of Premises) Act 2025. Complete three quick questions to receive your indicative compliance assessment.
What is the maximum capacity of your venue?
Consider the maximum number of individuals, including staff, reasonably expected to be present at the same time.
Does your staff currently hold valid ACT training?
ACT (Action Counters Terrorism) Awareness training helps staff recognise suspicious activity and understand appropriate responses to potential terrorist threats.
Do you have a documented emergency evacuation plan?
Consider whether your venue has established emergency procedures, including evacuation, communication and appropriate responses to security incidents.
Your Assessment Summary
Recommended Actions
The maximum non-compliance penalty for relevant enhanced-tier contraventions is £18 million or 5% of qualifying worldwide revenue for the most recent accounting period, whichever is higher. Daily penalties may also apply in certain circumstances.
This calculator provides an indicative assessment only. Actual scope depends on the premises’ use, qualifying criteria, reasonable expected occupancy and statutory exclusions. ACT training is a useful free resource, but is not itself a mandatory statutory qualification.
Always consult the official Home Office statutory guidance for the latest legal requirements.
Understanding Your Result
Your result provides an initial indication of how Martyn’s Law may apply to your premises or event, based on the information you entered.
The legislation establishes two tiers of requirements for qualifying premises and events.
Outside the Scope
If your result indicates that your premises may be outside the scope of Martyn’s Law, this generally means that the information provided does not meet the relevant qualifying criteria.
For qualifying premises, the main threshold is whether 200 or more individuals can reasonably be expected to be present at the same time, from time to time. However, the type of premises, its use and any applicable exclusions must also be considered.
Being outside the scope does not mean that general security planning and preparedness are unnecessary.
Standard Tier
The standard tier generally applies to qualifying premises where between 200 and 799 individuals may reasonably be expected to be present at the same time.
Those responsible for standard tier premises will need to notify the Security Industry Authority (SIA) and, so far as reasonably practicable, have appropriate public protection procedures in place.
These procedures cover:
- Evacuation
- Invacuation
- Lockdown
- Communication
The focus is on ensuring that people working at the premises understand what to do in the event of a terrorist attack or suspected attack.
Enhanced Tier
The enhanced tier generally applies to qualifying premises where 800 or more individuals may reasonably be expected to be present at the same time.
In addition to the standard tier requirements, those responsible must, so far as reasonably practicable, implement appropriate public protection measures to reduce the vulnerability of the premises to an act of terrorism.
Enhanced tier requirements also include documenting the relevant procedures and measures and submitting the required information to the SIA.
Certain premises, including places of worship and premises used for childcare, primary, secondary or further education, are subject to specific provisions and remain in the standard tier even where 800 or more people may be present.
Qualifying Events
Certain events can also fall within the scope of Martyn’s Law. These generally involve events accessible to the public, with entry conditions or checks in place, where 800 or more individuals may reasonably be expected to be present at the same time.
Qualifying events are subject to enhanced tier requirements. Their criteria differ from those applying to qualifying premises, so an event should be assessed in its own right.
Important Information
This calculator is provided by Security Pathway as an introductory tool to help organisations understand the potential application of the Terrorism (Protection of Premises) Act 2025, commonly known as Martyn’s Law.
The result is based on the information entered and should be treated as an initial indication only. It does not constitute a formal legal assessment, confirm that a premises or event is in scope, or establish that an organisation is compliant with the legislation.
Determining whether Martyn’s Law applies requires consideration of more than occupancy figures alone. The type and use of the premises, the nature of any event, access arrangements and the specific provisions and exclusions within the legislation may all affect the outcome.
The person or organisation with responsibility for qualifying premises or events should review the official Home Office statutory guidance and relevant SIA information before making decisions about compliance.
Martyn’s Law establishes responsibilities for the relevant responsible person. Employing a security contractor or outsourcing security arrangements does not transfer those legal responsibilities.
Official guidance and further information:
- Home Office: Martyn’s Law statutory guidance.
- Security Industry Authority: Understanding Martyn’s Law and the SIA’s role as regulator.
- ProtectUK: Martyn’s Law guidance and frequently asked questions.
Security Pathway accepts no responsibility for decisions made solely on the basis of this calculator. Organisations should refer to the legislation and official guidance when determining their legal obligations.
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